A047679 - cp's OEIS frontend

A047679 Denominators in full Stern-Brocot tree.

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	2
6	1
7	4
8	5
9	5
10	4
11	3
12	3
13	2
14	1
15	5
16	7
17	8
18	7
19	7
20	8
21	7
22	5
23	4
24	5
25	5
26	4
27	3
28	3
29	2
30	1
31	6
32	9
33	11
34	10
35	11
36	13
37	12
38	9
39	9
40	12
41	13
42	11
43	10
44	11
45	9
46	6
47	5
48	7
49	8
50	7
51	7
52	8
53	7
54	5
55	4
56	5
57	5
58	4
59	3
60	3
61	2
62	1
63	7
64	11
65	14
66	13
67	15
68	18
69	17
70	13
71	14
72	19
73	21
74	18
75	17
76	19
77	16
78	11
79	11
80	16
81	19
82	17
83	18

[1, 2, 1, 3, 3, 2, 1, 4, 5, 5, 4, 3, 3, 2, 1, 5, 7, 8, 7, 7, 8, 7, 5, 4, 5, 5, 4, 3, 3, 2, 1, 6, 9, 11, 10, 11, 13, 12, 9, 9, 12, 13, 11, 10, 11, 9, 6, 5, 7, 8, 7, 7, 8, 7, 5, 4, 5, 5, 4, 3, 3, 2, 1, 7, 11, 14, 13, 15, 18, 17, 13, 14, 19, 21, 18, 17, 19, 16, 11, 11, 16, 19, 17, 18]

cp's OEIS Frontend

A047679 Denominators in full Stern-Brocot tree.

Table of values

List of values

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	2
6	1
7	4
8	5
9	5
10	4
11	3
12	3
13	2
14	1
15	5
16	7
17	8
18	7
19	7
20	8
21	7
22	5
23	4
24	5
25	5
26	4
27	3
28	3
29	2
30	1
31	6
32	9
33	11
34	10
35	11
36	13
37	12
38	9
39	9
40	12
41	13
42	11
43	10
44	11
45	9
46	6
47	5
48	7
49	8
50	7
51	7
52	8
53	7
54	5
55	4
56	5
57	5
58	4
59	3
60	3
61	2
62	1
63	7
64	11
65	14
66	13
67	15
68	18
69	17
70	13
71	14
72	19
73	21
74	18
75	17
76	19
77	16
78	11
79	11
80	16
81	19
82	17
83	18

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	2
6	1
7	4
8	5
9	5
10	4
11	3
12	3
13	2
14	1
15	5
16	7
17	8
18	7
19	7
20	8
21	7
22	5
23	4
24	5
25	5
26	4
27	3
28	3
29	2
30	1
31	6
32	9
33	11
34	10
35	11
36	13
37	12
38	9
39	9
40	12
41	13
42	11
43	10
44	11
45	9
46	6
47	5
48	7
49	8
50	7
51	7
52	8
53	7
54	5
55	4
56	5
57	5
58	4
59	3
60	3
61	2
62	1
63	7
64	11
65	14
66	13
67	15
68	18
69	17
70	13
71	14
72	19
73	21
74	18
75	17
76	19
77	16
78	11
79	11
80	16
81	19
82	17
83	18

n	a(n)
0	1
1	2
2	1
3	3
4	3
5	2
6	1
7	4
8	5
9	5
10	4
11	3
12	3
13	2
14	1
15	5
16	7
17	8
18	7
19	7
20	8
21	7
22	5
23	4
24	5
25	5
26	4
27	3
28	3
29	2
30	1
31	6
32	9
33	11
34	10
35	11
36	13
37	12
38	9
39	9
40	12
41	13
42	11
43	10
44	11
45	9
46	6
47	5
48	7
49	8
50	7
51	7
52	8
53	7
54	5
55	4
56	5
57	5
58	4
59	3
60	3
61	2
62	1
63	7
64	11
65	14
66	13
67	15
68	18
69	17
70	13
71	14
72	19
73	21
74	18
75	17
76	19
77	16
78	11
79	11
80	16
81	19
82	17
83	18